setBlend()

Purpose

Set the blend mode

Description

Sets the function used to combine drawn pixels with the background

Syntax

setBlend( mode )

Arguments

mode blend mode : none (0), mix (1), add (2), subtract (3) or multiply (4)

Example

palette = [ 
    red,
    green,
    blue,
    yellow,
    purple,
    lime,
    orange,
    bisque,
    turquoise,
    teal,
    cyan
]

pos = { 120, 120 }
img = loadImage( "Finalbossblues/monster_elk", false )

blendTypes = [
    "None",
    "Mix",
    "Add",
    "Subtract",
    "Multiply"
]

type = 0
press = false

loop
    clear()
    c = controls( 0 )
    pos.x += c.lx * 4
    pos.y -= c.ly * 4
    if c.right and !press then
        type += 1
        press = true
    endIf
    if !c.right then
        press = false
    endIf
    if type > 4 then
        type = 0
    endIf

    setBlend( 0 )
    w = gWidth() / len( palette )
    for i = 0 to len( palette ) loop
        box( i * w, gHeight() / 10, w, gHeight(), palette[i], false )
    repeat

    setBlend( type )
    drawImage( img, pos.x, pos.y, 2 )

    setBlend( 1 )
    printAt( 0, 0, "Use Joy-Con Left Control Stick to move the image" )
    printAt( 0, 1, "Press Right Directional Button to adjust blend type" )
    printAt( 0, 2, "Blend Type: " + blendTypes[type] )
    update()
repeat

Associated Commands